philpot



APPLICATION FILED JULY 14. 1916.

m 0 mm I M2 A. D. PHILPOT.

PORTABLE PROJECTING MACHINE.

APPLICATION FILED JULY I4. 1916.

Patented July 15, 1919.

2 SHEETS-SHEET 2- Imfenfo? ALBERT D. PHILPOT, OF CHICAGO, J ILLINOIS,

ASSIGNOB '10- TOMALPA MFG. 00., OF

CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

. roarannr. PROJECTING-HACHINE.

Specification of Letters Patent.

Patented J my 15, 1919.

i Application filed m 14, 1916. Serial No. 109,228.

To all whom it may concern:

Be it known that I, ALBERT I). PHILPOT, a

' citizen of the United States, residing at Chicago, Cook county. Illinois, have invented certain new and useful Improvements in Portable Projecting-Machines, of which the following, taken in connection with the drawings, is a description.

"My invention has for its object the production of a portable projecting machlne for exhibiting moving pictures, and is so designed and constructed that the entire apparatus may be inclosed within a casing of convenient size to be easily transported from one place to another.

A further object of my invention 1s to provide means for quickly unwinding the film strip from the receiving spool at the end of each exhibition.

A further object of my invention is to provide means for ventilating'the light box and the casing inclosing the projecting mechanism so that the film may not be af- 1fecltled by the heat generated by the electric ig t.

With these and other objects in view, I have illustrated what I now consider the preferred form of my invention, although I wish to be understood as contemplating such changes as properly come within the scopeof the appended claims.

In these drawings,

Figure 1 is a side elevation of my projector mounted-in a casing, with one door of the casing opened;

Fig. 2 is a vertical, sectional detail, taken on line 22 of Fig. 1;

Fig. 3 is an enlarged fragmentary sectional view of the film spools, and a plan view of the clutch mechanism taken on line 33 of Fig. 1; I

Fig. 4. is an enlarged sectional detail of the clutch mechanism, taken on line H of' Fig. 3;

Fig. 5 is a perspective detail of one of the collars engagmg the sleeve on the shaft;

Figs. 6 and 7 are, respectively, perspective views of the clutch members and j 4 Fig. 8 is a perspective view of one of the sleeves upon 1 which the film spools are mounted.

Referring to the drawings, A represents a suite le casing with. which the operative mechanism of my projecting machine is arranged, which is preferably of the form and closed, through the opening A, where it my 110 preferably positioned in pulley D, over which travels a size of an ordinary suit-case, having a handle A upon each side thereof with a door 2 which is suitably hinged to the casing, as at a, a,

.and having an exposure opening A arran for carrying, and being rovided" the bottom of the'casing. A light box is the upper part of the casing and has supported thereon an electric light B, which is mounted in a socket I), carried upon a rod b". A wire I), extends from the light, having the proper connection 6 at the opposite end thereof, to beattached to any electric socket convenient to the place where the apparatus is being used.

The light box is preferably formed of a. double wall a, a having an air chamber a therebetween. This double wall is formed upon two sides and the top of the light globe B, the bottom thereof being open, as shown in Fig. 1. The two opposite sides of 'the light box are closed by the walls B, B one of which is supported upon the inner side of each of the doors of the casing, completely closing the light box when the casing is closed, and opening away from the same when the doors A A, are opened.

Extending horizontally across the top of the light box is another air chamber C, through which the film travels from the spool to the feeding mechanism. The casing formed on the parts A, A, A, is provided upon each side thereof and at the end in which the light box is mounted, with a. plurality of apertures 0, c, by means of which said casing and light box are ventilated to cool the chamber through which the film passes on its way from the reel to. the feedin mechanism. p

is a frame which is supported upon the casing A and'carries a film-feeding mechanism suitable for use in a machine ofthis kind. A train of intermeshing gears and inion's, 1, 2, 3, 4, 5, 6, are carried by said me. Mounted upon the shaft D' is a driving belt- D, which connects. with a driven. pulley D, which is mounted upon-a shaft 1). The stub of. the shaft D projects beyond its bearing D", and, when the door A of the casing is be engaged by a key, oicrank for a purpose hereinafter explained.

E are supports secured to the casing and forming a bearing for theshaft D, on which are mounted the sleeves E, E, at each end v thereof, as shown in Fig. 4. The driven pulleyD is mounted upon the shaft D. A short spirally-extend ng groove (1 1S garcvided in the shaft D, into which exten a pin (1, which is secured at one end tothe pulleyD. Arranged upon'each side of the pulley D isa clutch member e, e, eachof which is adapted to engage with a corresponding clutch member e a", mounted upon the endsof the'sleeves E, E, which are also carried upon the shaft D.

Surrounding thesleeves' E, E and between the clutch members e, e and the disks e, e, are coiled springs e, e, which exert a tension against the clutch members e','e.

Each of the sleeves E, E, is provided upon the outer face thereof for a portion of its length with an angular surface 7, over which fits a colla-rF which is secured thereto by a set screw f.

Each of these collars F is provided with a key i, which engages a socket in the hub F of each of the film reels F, F, mounted 'liljpon the outer end of each of the. sleeves E The delivery and receiving film reels or s ools F F are keyed to the sleeves E E, w ich are loose upon the shaft D.

l lach -u on the driven I reel or s'pool revolves with the shaft" D when the clutch member on the sleeve is engaged by the corresponding clutch member ulley D, as shown more a 0 early in Fig. 3, t e disengaged reel or spool 4 wound upon one reel or spool F and when the top of said casing over a secon guide of the projector G; through the feeding being carried by the sleeve which is loose upon the shaft as hereinafter ex lamed.

When ready for operation, t e film G is arrangedfor operation in the projector is firstcarried over the guide pulley g (-Figi. 1) secured to the casing A, thence perpen cularly (as the casing is shown in 1) to pulle g, and horizontally through the air cham r C to the feeding reels and in front mechanism,- over the guide pulley 12:, an

thence to the receiving reel or spool When the entire film has been exposed, the

operator attaches a key or crank (not here shown) to the stub of the shaft D',',and reverses the operation-of'the driving and driven pulleys D and D. which causes the clutch members 6,62,-

3Q disengage, and the clutch members e e to engage, thereby transmittin 'motiontothe receivmg reel-Ft.

The sleeve upgn which the reel 0r spool F is mounted ing loose uponjthe s aft -D*, the spool readily revolves, releasing .the film, which is. rapidly wound upon'the spool F and the film is ready for the next ex osure as operation.

'on said shaft face t ereof, a pulley mounte on said shaft on clutch mechanism between each of said reels and through the belt'D to feed the film groove therein, a pulley mounted upon} said shaft, a projection on said pulley moving in the aforesaidgroove, a sleeve loosely mounted on said shaft-on each sideof said pulley, a film reel mounted on each of said sleeves, and clutch mechanism mounted in operative relation'to each of said reels, substantially as described. g v.

2. In a projecting machine, the combination of a portable casing, a revoluble shaft supported in said casing, said shaft havin a spirally extending gro'ove therein, a pul ey mounted on said shaft, aprojection carried by said ulley and 'movablein said groove to limit t e movement of saidfpulley, a sleeve loosely mounted on-said side of the sleeves, and the direction reels.

shaft upon each ulley, film reels mounted on said clutch mechanism controlling of rotation of said shaft and The. connecting member 6 is f 3. In a projecting machine, the'combina- I t1on of a portable leasing, a revoluble shaft supported in said casing, a pulley mounted on said shaft, a sleeve mounted on said shaft on each side of said pulley, a reel mounted on each of said sleeves, clutch mechanism be tween each of said reels and the pulleyfand means for operatin said clutch mechanism whereby one of said reels may be turned in one direction and the other reel may be. turned in the opposite direction as said clutch members are moved into and out of engafiment with the respective sleeves.

4.. a pro ecting machine, the combination of a portable casing, a revoluble shaft supported insaid casing, a pulley mounted a groove extending spirally a short distance on said shaft, a pin projecting from said pulle and traveling in the aforesaid groove, a elivery reel and-a; receivin reel loosely mounted on said shaft, clutc mechanism coacting between 'said ulley and Y each of said'reelawhereby the direction of rotation of said reels may be opposite to each .other.

5. In a projecting machine,'the combination-pf aportable casin a revoluble shaft havin a groove extending 's irallypf the on said shaft, apin projecting from said pulley into the aforesald groove, :film reels loosely mounted opposite sides of the pulley,

and the aforesaid pulley, and means for actuating the clutch mechanism to operate either of said reels.

6. In a projecting machine, the combination of a pair of film ieels, each adaptedto rotate in opposite directions, a power shaft adapted to be rotatedin either direction, concentric sleeves mounted on said shaft, a reversing connection mounted on said power shaft and adapted to cause one of said reels to wind the filni when said shaft is turned in one direction and to cause the other reel to wind said film when said shaft is turned inthe opposite direction.

7 In a pro ecting machine, the combination of a driving shaft, a discharging reel and a receiving reel, coaxial sleeves loosely mounted on the driving shaft, reversing mechanism mounted on said'shaft, and clutch mechanism mounted in o erative relation with said shaft, whereby either of said reels may be operated independentlyof the other..

8. In a projecting machine, the combination of a driving shaft provided with a spiral groove on its face, a pair of film reels mountedthereon, loose sleeves mounted on said driving shaft, a pulley carrying a pin groove therein,

ing in one direction and winding it on the other reel when moving in a reverse direction, reversing mechanism carried on the .driving shaft and adapted to rotate either reel independently of the other.

9. In a projecting machine, the combination of a driving shaft, having a spiral coaxial sleeves loosely mounted on said shaft, a pulley on said shaft between said sleeves, a projection carried by said pulley and movable in the aforesaid groove, a film reel mounted on'each of said sleeves, a reversing connection comprising a pair of clutch members mounted on said power shaft and adapted to engage either of said sleeves and drive one reel when turned in one direction and adapted to drive the other reel only when the shaft is turned in the opposite direction. In testimony whereof I have signed this specification. Y

ALBERT n. PHILPoT. 

